That's kind of the trouble with constructions though. You've got to be standing on the tile you want to place them or be just under the floor-layer, meaning practically on the tile. Basically all of those kinds of things work like that so writing an exception to do a hardcoded behavior backwards might be so much trouble that he might as well do a more complete rope ladder.
Actually, that's not true. Bridges and hatch covers are built without standing on the tile. Walls, fortifications, statues, pillars, all are built without standing on the tile.
Anything that blocks movement or permits movement is built next to the tile. Yeah, rope ladders are an exception, but there are already quite a few exceptions in the game, including building staircases over open space from an adjacent ledge.
My words didn't exactly match the description if you want to be picky but having access to the tile you want to build something means being essentially at that height. *It could be that all of these instances just check a + around the specified tile with the center being first and then the side preferences we are familiar with.
The issue for downward stairs is that you can't be essentially standing below the tile you're on- the floor puts you at a certain height and up stairs bump you up but there's no hanging off the edge of a down-stair.
but developers tend to have these list of things they know they need to tackle sooner or later and when a good excuse comes along to tackle them, they sometimes jump at it.
So you're taking my point and calling it your own now?
If he's been planning on it and wants to put in the effort then we both agree that it probably wouldn't be worth it to
just do reverse-stairs, right?
I am ok with ropes being used by creatures without "grasp", at least for some time. Another solution would be to allow up-down stairways to be constructed under other stairs.
I hope creatures with tentacles will be able to use rope ladders. Maybe even have a preference for them over stairs?
If the tentacles are long enough they could just grab their way up places that didn't even have those. I imagine there's be less pathfinding trouble with that because fliers already behave like that but limited distance behaviors might hit a lot of the demolition pathfinding troubles.